Fob cleaning bobes of staybolts



J. R. FLANNERY AND E. I. 00008.

MEANS FOR CLEANING BORES 0F snwa'ous.

APPLICATION FILED FEB- 21.1917.

Patented Oct. 7,1919;

7 WI NESSZ:TS. 7 y INVENTORSV 2W W Allorneys WITED 'fS-TAT ATEN O E-aonnnosrnnsrtamnmr ETHAN r. bombs; on PITTSBURGH, PENNSYLVANIA-,7ASSIGNORS 'TOFLANNERY 01m COMPANY, or ri'rrsiaunen, PENNSYLVANIA.

agus Fora CLEANING BORES or STAYBOLTS.

To all whom it may concern:

Be it known that we, JOHN R. FLANNERY and ETHAN I. Donos, citizens ofthe United States, and residents of Pittsburgh, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements, in Means for Cleaning Bores of 'Staybolts; and wedo hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to means for cleaning out tell-tale holes in staybolts for boilers.

Heretofore it has been proposed to provide a staybolt for boilers with acentral bore which forms a tell-tale hole into which steam and water mayenter in the event that the bolt becomes ruptured, such steam and waterfinding an exit, in some instances, throughthe open end of the hole andthus indicating the ruptured condition of the bolt. The tell-tale holeis liable to receive an accumulation of solid matter, such as dust andc-inders, which may clog it to a greater or less extent and thus renderthe functions of said tell-tale hole more or less uncertain.

The object of our invention is to provide simple and eflicient meanswhereby any solid matter which may have accumulated in the tell-taleholemay be easily loosened and quickly removed, so that the boltmay beproperly examined to determine its con-. dition.

With this and other objects in view, the invention consists in certainnovel features of construction and combinations of parts as hereinafterset forth and pointed out in the claim. v

The accompanying drawing is a sectional view illustrating an embodimentof our invention.

1 represents the inner sheet of a boiler and 2 the inner end of a staybolt 3 threaded through the sheet 1 and upset,the other end of stay boltbeing made with a head 4 which will be suitably mounted at the outerboiler sheet in any well known manner.

In the construction shown in the drawing, the sta bolt is provided witha central boreexten ing from the inner end of the bolt to a point at ornear the head a at the Specification of Letters Iatent.

amass filed Eep r .21, 1917., Serial as. 150,195.

Patented Oct."7, 1919.

outer end of the bolt and forms a tell-tale hole 5.

The device for cleaning the tell-tale hole comprises a head 6 providedwith a suitable handle 7 and a tubular tool 8 secured to said head andadapted to enter the tell-tale hole as shown in the drawing,the free endof said tool being toothed as at 9 for loosening accumulated solidmatter within the telltale hole, and the diameter of said tool is suchwith relation to that of the hole or bore 5 that an annular air duct 10will be formed when the tool is within said bore.

The rear end of the tubular tool 8 communicates with a chamber 11 withinthe head 6 and the nipple 12 through which the tool passes may beprovided with lugs 13 to engage the end of the bolt and insure the freeaccess of air to the annular duct 10.

An outlet duct 14 communicates with the chamber 11 and is adapted forthe reception of a tube 15 leading to the inlet of a vacuum pump, notshown. A nozzle 16 is disposed to discharge through the chamber 11 andacross the end of the tubular tool 8, said nozzle being locateddiametrically opposite the duct 14. The nozzle 16 communicates with aduct 17 in one end of the head 6, and said duct 17 communicates with aduct 18, the free end of which latter is adapted for the reception of atube 19 leading to the outlet of the vacuum pump.

When the tubular tool is inserted into the tell-tale bore andoscillated, the accumulated solid material will be disintegrated orloosened and simultaneously, the passage of air from the nozzle 16across the chamber 11 will tend to create a vacuum in the latter andhence a suction will be set up through the tool 8 which will operate towithdraw the particles of solid matter and discharge the same throughthe duct 14.

Slight changes might be made in the details of construction of ourinvention without limiting its scope, and hence we do not wish torestrict ourselves beyond the scope of the appended claim.

Having fully described our invention what we claim as new and desirertosecure by Letters-Patent, is

In a cleaning device, the combination of a manually operable head havinga suction V chamber, and means tor creating a suction, and a tubularboring tool secured to. said head and communicating with the station.ispeeifi -atiofii fi Fthe p i eeelio'ei o-fg two sub-- chargber, the)said tool adapted m r e enserihing witnesses. tere into a ore open atoneend an Closed Y V at the other and 'ofles diametef thztnth'e 5 bore soas to provide fof the pas sage of 311" r r 1 around the same to the freeend. of the bor-., V Witnesses; ing tool. d Fl 'Hj' Amaso N In testimonywhereof e have signed this EDWIN S. RYoE.

Copies 01' this patent mey' be qbteine llfor five gents each, byemlqgeesipg the fcommissiozeer70f Pate Washin ton, no.

